E3 Tweak is a small, simple tool for advanced E3 configurations. It is available in E3 since version 3.1. Its main purpose is to introduce a graphical interface for all those settings that until now could only be performed directly via Windows Registry Editor.

E3 Tweak is presented on a window with configuration items displayed in a tree structure. Items are grouped according to the area in which its configurations act: E3 Server, E3Run, REC, Logs, and COM Filter.